/*
 * Copyright 2009 Armando Blancas
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package tests.taskgraph.tasks.data;

import java.io.IOException;

import junit.framework.Assert;
import junit.framework.JUnit4TestAdapter;

import org.junit.After;
import org.junit.Before;
import org.junit.Test;

import taskgraph.channels.Channel;
import taskgraph.ports.InputPort;
import taskgraph.ports.OutputPort;
import taskgraph.tasks.data.Split;

public class SplitTest {

	/**
	 * Runs the test suite in this class from the command line.
	 * 
	 * @param args	Arguments are ignored.
	 */
	public static void main(String[] args) {
		org.junit.runner.JUnitCore.runClasses(SplitTest.class);
	}
	
	/**
	 * Provides compatibility with 3.x versions of JUnit.
	 * 
	 * @return A 3.x-compatible test suite.
	 */
	public static junit.framework.Test suite() {
		return new JUnit4TestAdapter(SplitTest.class);
	}
	
	private InputPort<Product> input;
	
	@Before
	public void setup() {
		Channel<Product> channelp = new Channel<Product>();
		input = channelp.getInputPort();
	}
	
	@After
	public void cleanup() throws IOException {
		input.close();
	}
	
    /*+----------------------------------------------------------------------+
	  |                                                                      | 
	  | Test the constructors.                                               | 
	  |                                                                      | 
	  +----------------------------------------------------------------------+*/
	
	@Test
	public void defaultConstructor() {
		Split<Product> task = new Split<Product>();
		Assert.assertNotNull(task);
	}
	
	@Test
	public void defaultInstanceClass() {
		Split<Product> task = new Split<Product>();
		Assert.assertEquals(Split.class, task.getClass());
	}

	@Test
	public void constructorWithPorts() {
		Split<Product> task = new Split<Product>(input);
		Assert.assertNotNull(task);
	}
	
	@Test
	public void constructorWithPortsAndClass() {
		Split<Product> task = new Split<Product>(input);
		Assert.assertEquals(Split.class, task.getClass());
	}

    /*+----------------------------------------------------------------------+
	  |                                                                      | 
	  | Test the run method.                                                 | 
	  |                                                                      | 
	  +----------------------------------------------------------------------+*/
	
	@Test
	public void testRun() throws IOException {
		Product[] products = {
			new Product(5005, "Notebook", 2.50f),
			new Product(1400, "Pencil",   0.49f),
			new Product(0001, "Eraser",   0.60f),
			new Product(4040, "Bookend", 10.25f)
		};

		Channel<Product> productChannel = new Channel<Product>();
		Channel<Object> keyChannel = new Channel<Object>();
		Channel<Object> nameChannel = new Channel<Object>();
		Channel<Object> priceChannel = new Channel<Object>();
		
		Split<Product> task = new Split<Product>(productChannel.getInputPort());
		task.setPropertyName(0, "id");
		task.setPropertyName(1, "name");
		task.setPropertyName(2, "price");
		task.setOutput(0, keyChannel.getOutputPort());
		task.setOutput(1, nameChannel.getOutputPort());
		task.setOutput(2, priceChannel.getOutputPort());		
		
		OutputPort<Product> outputPort = productChannel.getOutputPort(); 
		for (Product p : products)
			outputPort.write(p);
		outputPort.close();
		
		task.run();
		
		InputPort<Object> keyInput = keyChannel.getInputPort();
		InputPort<Object> nameInput = nameChannel.getInputPort();
		InputPort<Object> priceInput = priceChannel.getInputPort();

		for (Product p : products) {
			Assert.assertEquals(p.getId(), keyInput.read());
			Assert.assertEquals(p.getName(), nameInput.read());
			Assert.assertEquals(p.getPrice(), priceInput.read());			
		}
		
		keyInput.close();
		nameInput.close();
		priceInput.close();
	}
	
    /*+----------------------------------------------------------------------+
	  |                                                                      | 
	  | Negative tests for constructors.                                     | 
	  |                                                                      | 
	  +----------------------------------------------------------------------+*/

	@Test(expected=IllegalArgumentException.class)
	public void constructorWithNullInputPort() throws IOException {
		new Split<Product>(null);
	}

    /*+----------------------------------------------------------------------+
	  |                                                                      | 
	  | Negative tests.                                                      | 
	  |                                                                      | 
	  +----------------------------------------------------------------------+*/

}
